Clamping structure for form apparatus



J. BANNEYER CLAMPING STRUCTURE FOR FORM APPARATUS May 11, 1954 2 Sheets-Sheet 1 Filed Jan. 18, 1952 INVENTOR. /Z 4e,a

ATMRNEYZ E May 11, 1954 .1. BANNEYER CLAMPING STRUCTURE FOR FORM APPARATUS 2 Sheets-Sheet 2 Filed Jan. 18, 1952 INVENTOR.

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Patented May 11, 1954 UNITED STATES PATENT OFFICE CLAMPIN G STRUCTURE FOR FORM APPARATUS Joseph Banneyer, Chicago, 111.

Application January 18, 1952, Serial No.

5 Claims. (Cl. 25 131) My invention relates to clamping structures for form apparatus. More particularly my innow abandoned. This application is also a continuation-in-part of my co-pending application No. 222,904, filed April 25, 1951.

Another obclamping structures is that they have to be relatively large and strong materials to withstand any twisting or turning of the panels when the concrete is applied thereto. 1

In my co-pending application U. S. Serial No. 222,904. referred to above, I disclose aclamping One of these advantages is that the clamps permit rapid assembly of the panels since wedges are employed which can be rapidly driven into place. that the clamping structures automatically correctly align the panels as the flanges are clamped together. A still further advantage of the'preferred form of this clamping structure is that the clamps are wedged in two directions and all'corr- Another advantage is both of the aligned the'pancls in securing the panels together and line 5-E of Fig.

tiguous surfaces of the clamp-frames, wedges and panels are in coacting abutting relationship so as to reinforce each other. However, in the actual first wedge.

Therefore, it is an my invention to provide a clamp-frame which can be used to secure two panels together while employing only one wedge, and yet cooperating with inwardly turned ledges of reinforcing the connection. It is a further obe Further objects and advantages will appear as the specification proceeds.

My invention is shown in an illustrative embodiment in the accompanying drawings in which- Fig. 1 is a perspective view of the simplest form of my clamping structure showing two I panels releasably locked together thereby; Fig. 2,

nered junction; Fig. 5, a sectional view taken on 4 showing the relationship of the v-shaped plates to the crown plate and to the -panel flanges; Fig. 6,a perspective'view of the derstood that the .sidearnember l Eiis resting on a at a spaced distance clamp shown in Fig. 4.; Fig. '7, a detail sectional view taken on line 1-1 of Fig. 5 showing the double wedging employed in securing one pair of V-shaped plates to the panels; Fig. 8, a detail sectional view taken on line 8-8 of Fig. 5 showing the single wedging employed to lock the panels together between the sides of the V-shaped plates opposite the pair of plates which are wedged in two directions; andFig. 9, a detail sectional view taken on line -S& of Fig. 5 showing the aligned slot between the crown member and the side members within which the ledges are received.

Looking first at Figs. 1 to 3, l designatespanels which can be of various rectangular shapes. Panels of this type are shown in more detail in my abandoned application U. S. Serial No. 29,294. However, for purposes of this .applicationitis .be lieved to be sufficient to point out that panels H! are characterized by having peripheral flanges H extending rearwardly from imperforate wallforming fronts 12. Also, flanges H terminate in inwardly turned ledges l3. In the illustration given, and preferably panel fronts l2 and ledges l3 areparallel to each other and disposed at right angles to flanges i l. Furthermore, it will be unpanels employed in assembling the braced form .structure for receiving concrete are usually of the same size so that panel fronts l2 and ledges .13 can be aligned respectively in the same plane with the panel fronts and ledges of other :panels.

:For the purpose gether of the type of securing two panels todescribed, I prefer to employ a clamp-frame or housing M of the type illustrated in Figs. 1 to 3. It has been found possible to rapidly construct a strong braced form structure while employing only this simple clampframe. Howevenas will subsequently be described, if desired,-clamp-frame M can be modified while retaining its essential principles to provide for simultaneously securing three or four panels together at their junctions.

In the illustration given, clamp-frame l4 comprises a side member or plate 15 which has a flat inner surface I50. which is adapted to rest against the inner surfaces of flanges H. Preferably, side plate It is of substantially the same width as the distance between the panel fronts l2 and the inwardly turned ledges 13 so as to .abut both the underside .of the .panel fronts and the underside of the ledges.

A crown member or plate 1 5 the end of side plate ISadjacent is rigidly secured to ledges [3. When flange H, crown plate It is adapted to extend in abutting relation .over ledges 13. Preferably, crown plate 15 is :at right angles to side plate l5. Between :side plate It and crown plate "i6 there is provided ;a slot 'li aligned to receive the ledge l3 securedto the'fiange l l against which :side plate [5 is resting. Preferably, a laterally extending head-member It is employed to secure side plate l5 tocrown plate 1-6 while providing therebetween the ledgereceiving slot i3. Also, it is desirable that 'slot H be dimensioned to snugly receive ledge i3.

Another side member or plate [9 is rigidly secured to the projecting end of crown member IB so .as to extend laterally from crown member 16 from side plate l5 and in facing relation therewith. In the illustration given. side plate i9 is thicker at one end than at the other to provide .an inner surface 19a whichis aligned with inner surface Ilia of side plate Hi to provide a wedge-shaped cavity therebetween the other direction by adapted to receive correspondingly tapered wedge 26 so as to releasably lock panels in together in the manner illustrated in Figs. 1 to 3. Preferably, side plate I9 is of substantially the same width as side plate i5 and is provided at the end adjacent panel front 42 with an inwardly turned extension or tip 2 l. Preferably, extension 2! increases in thickness from one end to the other in thesame direction as side ;plate i9 so that its side surface Ha is inclined with respect to ledge l3. Also, it is face 2119 be inclined with respect to surface l5a of side plate Hi to correspond to the inclination -.of .surface 19a, as seen more clearly in Fig. 2. When side plate i9 is equipped with tapered extension 21, wedge 20 is notched at corner 20a to .provide .taperedsurfaces corresponding to surfaces 2 la and 2 lb. Thus, in the preferred form of my clamp-frame l4 and of correspondingly notched and tapered wedge 20 panels In are re- .leasably locked together by a double-wedging action, side plate 19, :flanges H and side plate 15 being wedged in one direction by wedge .20 while ledge I3 is wedged against extension .2! in wedge 20.

As explained in detail in my abandoned application U. S. Serial No. 29,294 it is desirable to employ means on at least some of the clamps for securing the clamps to pipes or other bracing elements to assist in supporting the form apparatus when the concrete is poured into it. Any suitable means can be provided to accomplish this purpose. For example, in Fig. 1 there is shown mounted on. the outer surface of crown M a socket v22 having a hexagonal lug 23 projecting EfI'Om gpipe receiving arm 24. Hexagonal lug 23 can be secured within recess 22a by any suitable means such as bolt 25. It will be understood that another pipe receiving arm or clamp member adapted to mate with arm 24 can be :fastened around a pipe held in the central portion 101 :arm 25 and fastened to arm 24 by means :of :bolts, etc. through apertures 2141. All of "this structure is well shown in my abandoned application 29,294, and therefore it is believed that it will not be necessary to further describe it herein.

As previously indicated, clamp-frame M can be modified while retaining its essential principles to provide for simultaneously securing three or four panels together at their junctions. Such a modification is illustrated in Figs. 4 to 9. As shown more clearly .in Fig. 4, four rectangular :panels 10 are brought together and aligned to form a four-cornered junction. Panels H) are of the 'same type as those previously described in connectionwith clamp-frame l4having abutting flanges .H extending rearwardly from their aligned wall-forming fronts I2 and terminating maligned inwardly turned ledges .l 3.

When four panels ID are brought together to form .a -cornered junction as illustrated in Fig. 4, a clamp-frame 26 can be employed to simultaneously secure thes panels together at their junction. In. the illustration given, clampf-rame 25 comprises a crown plate 21 adapted. to reston the outer surfaces of ledges l3 extending over the -cornered junction and beyond the ledges. To the underside of crown plate 25 there ar secured four V-shaped plates 28, 28, 30 and i in agenerally symmetrical arrangement with their corners inwardmost and in spaced-apart relation so that one of the V-shaped plates extends within each of the panels I!) when crown plate 2e is resting on ledges l3 over the 4-cor-- the surfaces of flanges I I panel fronts I2. Preferably plates 3Ila and 3Ia are substantially the same width as the distances the ledges. Between side plates 30a and 31a and crown plate 26 there is provided slots 32 and 33, as

is accomplished by providing sides 28a and 29a angles to the flanges abutting the pair of sides 30a and am. Preferably, extensions u and 37a are inclined with respect to crown plate 26, and therefore with respect to ledges I3. Also, it is preferred that end surfaces 38b and 3722 be inclined in the same direction as sides 28a and 29a.

In releasably locking the panels together with clamp-frame 2-6, six wedges are required. Four of these wedges 38 are tapered only in one direc- 20, previously described I 4. These two wedges 39 are tapered in two directions and are notched at one corner to receive extensions 36 and 3?, Thus, as previously described, this structure accomplishes a doublewedging action by wedging side plates 28a and 29a against flanges II and extensions 36 and 3! against ledges I3.

The operation of the clamp-frames in releasably locking panels Ill together has already been indicated in considerable detail. Preferably, panels It are brought together in abutting relation and the clamp-frames such as clamp-frames Id and 26 are applied so as to straddle flanges II and the wedge blocks such as blocks 20, 38, and 59 are forced into place. This can conveniently be done by the use of a hammer or mallet, whereby the wedges can be rapidly driven into correct position. Thus, speedy assembly of the panel structure is accomplished. Similarly, the wedges can be easily removed by striking them on the dimensioned to snugly In the illustration given, this s opposite end so that they will be disengaged from the clamp-frames.

While in the foregoing specification, I have set widely by those skilled in the art without departing from the spirit of my invention.

I claim:

1. A clamp-frame for ing and in facing relation therewith,

is seated thereon.

3. In a braced form structure for receiving concrete, the combination of two panels in said form having aligned wall-forming fronts joined to outwardly turned peripheral flanges lying in abutting relation and terminating in aligned inwardly turned ledges, a clamp-frame straddling secured to the end of said side plate adjacent metrical arrangement with their corners inwardsaid ledges and extending in abutting relation most to the underside of said crown plate in over said ledges, said side plate and said crown spaced-apart relation so that one of said V- member having a slot therebetween snugly re shaped plates extends within each of said panels Ceiving the ja ledge, and other side 5 when said crown plate is resting on said ledges, plate secured to said crown plate and extendall of said V-shaped plates being aligned with ing laterally therefrom toward said panel front respect to each other to provide wedge-shaped at a spaced distance from said first-mentioned cavities therebetween, one adjacent pair of said side member and aligned with respect to the ad-- plates having sides lying in substantially the iacent p l fl n to provide a wedge-shaped 10 same plane and adapted to rest against said panel cavity therebetween, sa d last-mentioned d flanges between saidledges and said panel fronts, plate having its inner end substantially abutting said sides lying in the same plane and said crown the panel front, and a tapered wedge positioned plate having l t th t aligned t Wi h said W p cavity r r bly ceive said ledges, the other adjacent pair of v- IOCk-mg d Pa together- 5 shaped plates having inwardly turned extensions 4. The structure of claim 3 in which said secse r d t the bottom edges of the sides facing end-mentioned side plate terminates in an inthe panel flanges at right angles to the flanges ward extension providing an inclined inner surabutting the ides of the first-mentioned pair of face against which said wedge abuts so as to sides lying in the same plane, said inwardly Wedge Said ce against the j t ledge 20 turned extensions providing inner surfaces in 5. A clamp-frame for use in releasably locking dined with respect to said crown plate. {our rectangular panels together when aligned to form a ie-cornered junction, said panels having eferences Ci ed in the fi Of this P e abutting flanges extending rearwardly from their UNITED STATES PATENTS aligned wall-forming fronts and terminating in 25 aligned inwardly turned ledges, comprising a Numb Fa Date crown plate adapted to rest on the outer surfaces g gs? 22g i e 4 1 e 1 t'cn 1 1 of said ledges ov 1 said coineied m 0 1 and 1,898,319 some Feb 21, 1933 four V-shaped plates secured in a generally sym- 

